diff --git a/pyproject.toml b/pyproject.toml
index 253924d0..59986c60 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,7 +18,7 @@ license.text = "Apache-2.0"
 keywords = ["juju", "test"]
 
 dependencies = [
-    "ops~=2.17",
+    "ops~=2.15",
     "PyYAML>=6.0.1",
 ]
 readme = "README.md"
diff --git a/scenario/context.py b/scenario/context.py
index 4f4e409b..26665c06 100644
--- a/scenario/context.py
+++ b/scenario/context.py
@@ -27,7 +27,10 @@
 )
 
 if TYPE_CHECKING:  # pragma: no cover
-    from ops._private.harness import ExecArgs
+    try:
+        from ops._private.harness import ExecArgs  # type: ignore
+    except ImportError:
+        from ops.testing import ExecArgs  # type: ignore
 
     from scenario.ops_main_mock import Ops
     from scenario.state import (
@@ -499,7 +502,7 @@ def __init__(
         self.charm_root = charm_root
         self.juju_version = juju_version
         if juju_version.split(".")[0] == "2":
-            logger.warn(
+            logger.warning(
                 "Juju 2.x is closed and unsupported. You may encounter inconsistencies.",
             )
 
diff --git a/scenario/mocking.py b/scenario/mocking.py
index 99b5d768..d3ec6e20 100644
--- a/scenario/mocking.py
+++ b/scenario/mocking.py
@@ -22,7 +22,12 @@
 )
 
 from ops import JujuVersion, pebble
-from ops._private.harness import ExecArgs, _TestingPebbleClient
+
+try:
+    from ops._private.harness import ExecArgs, _TestingPebbleClient  # type: ignore
+except ImportError:
+    from ops.testing import ExecArgs, _TestingPebbleClient  # type: ignore
+
 from ops.model import CloudSpec as CloudSpec_Ops
 from ops.model import ModelError
 from ops.model import Port as Port_Ops
diff --git a/tox.ini b/tox.ini
index bfe802f1..d3155731 100644
--- a/tox.ini
+++ b/tox.ini
@@ -43,7 +43,7 @@ commands =
 description = Static typing checks.
 skip_install = true
 deps =
-    ops~=2.17
+    ops~=2.15
     pyright==1.1.347
 commands =
     pyright scenario